W. A. Parks, High Note — Low Note (1916)
“ I am using mica diaphragm phones and find that amateurs who have a low note, in fact the very ones mentioned by 1VN are much easier to read than those having a high note. I have heard 1VN fairly loud, (using galena detector altogether) , and also 8YC, 8YI, and others having a high note, and who come in fine, and I am not blind to the certain well known advantages of the high note, in a properly designed set. ”
